Language Support

The following languages and Language Servers are supported. In order to use Language Server features, you must first install the appropriate Language Server.

Check the language support in your installed helix version with hx --health.

Also see the Language Configuration docs and the Adding Languages guide for more language configuration information.

LanguageSyntax HighlightingTreesitter TextobjectsAuto IndentDefault LSP
bash✓bash-language-server
c✓✓✓clangd
c-sharp✓OmniSharp
cairo✓
clojure✓clojure-lsp
cmake✓✓✓cmake-language-server
comment✓
cpon✓✓
cpp✓✓✓clangd
css✓vscode-css-language-server
dart✓✓dart
devicetree✓✓
dockerfile✓docker-langserver
edoc✓
eex✓
ejs✓
elixir✓✓elixir-ls
elm✓elm-language-server
erb✓
erlang✓✓erlang_ls
fish✓✓✓
gdscript✓✓
git-attributes✓
git-commit✓
git-config✓
git-diff✓
git-ignore✓
git-rebase✓
gleam✓✓
glsl✓✓
go✓✓✓gopls
gomod✓gopls
gowork✓gopls
graphql✓
hare✓✓
haskell✓haskell-language-server-wrapper
hcl✓✓terraform-ls
heex✓
html✓vscode-html-language-server
iex✓
java✓jdtls
javascript✓✓typescript-language-server
jsdoc✓
json✓✓vscode-json-language-server
jsx✓✓typescript-language-server
julia✓julia
kotlin✓kotlin-language-server
latex✓texlab
lean✓lean
ledger✓
llvm✓✓✓
llvm-mir✓✓✓
llvm-mir-yaml✓✓
lua✓✓lua-language-server
make✓
markdown✓
meson✓✓
mintmint
nickel✓✓nls
nix✓✓rnix-lsp
nu✓
ocaml✓✓ocamllsp
ocaml-interface✓ocamllsp
odin✓
openscad✓openscad-language-server
org✓
perl✓✓✓
php✓✓✓intelephense
prisma✓prisma-language-server
prologswipl
protobuf✓✓
python✓✓✓pylsp
r✓R
racketracket
regex✓
rescript✓✓rescript-language-server
rmarkdown✓✓R
ron✓✓
ruby✓✓✓solargraph
rust✓✓✓rust-analyzer
scala✓✓metals
scheme✓
solidity✓solc
sql✓
sshclientconfig✓
starlark✓✓
svelte✓✓svelteserver
swift✓sourcekit-lsp
tablegen✓✓✓
tfvarsterraform-ls
toml✓taplo
tsq✓
tsx✓typescript-language-server
twig✓
typescript✓✓typescript-language-server
v✓vls
vala✓vala-language-server
verilog✓✓svlangserver
vue✓vls
wgsl✓wgsl_analyzer
yaml✓✓yaml-language-server
zig✓✓zls